When creating orthos in Erdas imagine or LPS from geoeye-1 (or other) satellite images having _rpc.txt files, which are referenced in WGS84 generally, what should be the projection of the used DEM? If ...

I have a LULC for India. i need to filter out non-agricultural, non-builtup, non-waterbody, non-forest. simply wastelands,scrubs,swamps, grasslands etc.
Please how to filter these using ERDAS IMAGINE ...

I've just run a principal components analysis on a Landsat image and am trying to calculate my factor loadings. I'm using the textbook Digital Image Processing by John Jenson as a guide and it says ...

I pan-sharpened one Landsat Image on ERDAS using the resolution merge resource, with brovey transform and nearest neighbor techniques. But I was told that in terms of land-use classification, it would ...

After a supervised classification in ERDAS IMAGINE I have some undefined "ghost classes" in the attribute table. Also have a look at this youtube video at about 7:12.
I'm wondering why they arise and ...

I performed radiometric correction analysis on Landsat 8 image ( format: integer unsigned 16 bit) in ERDAS IMAGIN 2014.
However, the output image would be created if I could select format: float 32 ...

I am trying to open a .img image fil in ERDAS Imagine and I keep getting the message "End of file reading dictionary" with ERDAS not responding. The program gets stuck here and I have to shut it down. ...

I have some issues with orthoresampling images in ERDAS Photogrammetry (formerly LPS). I've set up two different image blocks (including orientation and camera paramters) and created multiple digital ...

I was applying the vegetation index
($n1_ttc0003r_16(2) - $n1_ttc0003r_16(4)) / ($n1_ttc0003r_16(2) + $n1_ttc0003r_16(4))
to a multispectral image, and the raster resulting on this operation had all ...

I'm doing re-sampling pixel size in ERDAS 2014,I'm using input image(Indian terrain) in GCS_WGS_84 projection.
Now I have to keep out put cell size as 1m,what is the 1m equvivalent value in Decimal ...

I could not open/read the following .img file.
The document below says it is a raster file.
http://edc2.usgs.gov/1KM/land_sea_mask.php
I tried to open it using many ways such as Q-Gis software, and ...

I have 550 piece of .Tif fil files. I need to mosaic them. I tried QGIS, ERDAS and ArcGIS but they crashed everytime. In Erdas Tif's stored only 4GB limit of size.
Which solution can be useful for me ...

I'm trying to run a supervised classification for an image. I was working with it in ArcMap and created some training data. I wanted to see if I could get a better result with Erdas Imagine using the ...

I use to perform analysis and imagery exploitation with the software above.
I have created a Stereo Analyst report with some 3d polygon by a stereoscopic block.
How do I calculate the volume of some ...

I have Landsat images for the same area over 20 years (one photo per year in same season). I would like to detect changes occured in forested area like clear-cut and bark beetle outbreak over time. I ...

I am trying to process INSAT-3D images, which contain six different bands. I have to extract each and every band form the .h5 data file, so when I extract first band (MIR) band form the data set, I ...

I have an already mosaiced image for a large area. I need to match colours in this single image. I do not have each image separately. I just have this large single image downloaded from GLS. How can I ...

My tif image data type is float (i.e. my data is between -1 to +1) and I want to convert it into 8bit unsigned integer.
I used ERDAS IMAGINE import tool to do this, while converting it into img also.
...